Apparatus for spraying molten substances



y 1930- H. J. VERSTEEG 1,758,878

APPARATUS FOR SPRAYING MOLTEN SUBSTANCES Filed Aug. 19, 1927 I/VVE'NTOR Patented May .13, 1930 UNITED STATES HENDRIK JOHAN VERSTEEG, OF DIEMEN,

NETHERLANDS, ASSIGNOR TO GHRISTIAAN J'OHAN JUNG, AMSTERDAM, NETHERLANDS APPARATUS FOR SPRAYING MOLTEN SUBSTANCES Application filed August 19, 1927, Serial No. 214,031, and in the Netherlands September 3, 1926.

This invention relates to apparatus for spraying molten substances," particularly metals such as aluminium and zinc, of the type comprising a container fitted with "a nozzlethrough which the molten substance around a reduced part ofthe nozzle and thejet ring and nozzle are clamped together and against the container, preferably by means,

of a separate clamping piece which is also detachable from the container.

The bore of the nozzle may provide a'seat for a needle valve regulating the supply of molten substance and disposed across the container,-with means for adjusting the valve outside the container. The common axis" of the nozzle and of the needle valve is preferably inclined in relation to the normal liquid level in the container with the nozzle below, and the valve adjusting means above, that level.-

When a separate clamping piece is used it is preferably in the form of a protective deflectorshield clamping both the jet ring and the nozzle to the container and shaped to provide a passage or flue around the parts of the container adjacent to the nozzle. In this manner the flame and gases from the burner used to heat the container and its contents are deflected on to the container and around the nozzle and jet ring whilst external objects are protected from this heat.

-Screwed rods may extend from the clamping piece shield and be fitted with nuts engaging lugs on the container to clamp the jet ring and nozzle together and ;'to hold both them and the clamping piece in position on the container.

the heat of the flame is utilized as much as,

possible. The flame from the burner is guided along the wall of the container 1 in a passage or flue formed by a protective deflector shield 3 which also serves as a clamping piece for a nozzle 4 and a jet ring 5. The nozzle 4 is a separate part with a central bore and a faced surface around one end of that bore fitting a corresponding faced edge around an opening in the container 1. At the other end of the bore the nozzle4 is provided with a reduced portion and a tubular ring 5jfits around this reduced portion and against a shoulder between the reduced portion and the main body of the nozzle 4. This tubular ring 5 supplies the compressed air or gas for spraying the material leaving the mouth of the nozzle 4. For this purpose perforations 6 of suitable size and shape to produce the required jets of air or gas .are

provided in the tubular ring and open near the mouth of the nozzle 4. The tubular jet ring 5 is connected with, and may form part of, a tube 7 .for the supply of the compressed air or gas. f

The protective deflector shield 3 is provided with an opening to surround the perforations of the jet rin 5 and the shield acts as a clamping piece Teing provided with screwed rods. 8 disposed between lugs 9 at each side of the container 1. Nuts 10 and washers 11 are fitted to the screwed rods 8 and by screwing up these nuts 10 the protective shield ,3 is drawn -against the tubular jet ring 5 and the latter against the nozzle 4 which is finally ressed against the container 1 so that in t is manner all the parts mentioned are clamped together, and the nozzle and jet ring may be readily removed and '1 for which purpose the needle may be screwed to engage a corresponding thread in the gland of the stufiing box 13 or in a part carried thereby, the end of the needle being suitably shaped so that it may be turne by a wrench or handle in order to adjust th supply of molten material to the nozzle 4 Preferably, however, the needle 12 is adjusted by a simple axial movement.

The nozzle 4 is below the normal liquid level in the container, and both the axis of the nozzle bore, and the needle 12 are inclined to that level, the needle extending from the nozzle to the stulfing box 13 which is fitted above the liquid level. In this manher the part of the needle 12 which projects outside the container and enables the valve to be adjusted is removed from proximity to the burner flames, whilst the nozzle bore is directed downwards. Thearrangement is such also that the needle valve does not interfere with the removal or replacing of the nozzle 4:.

For ejecting the contents of the container through the nozzle 4 compressed air or gas is admitted to the container 1, preferably from the same source which supplies the tube 7 and jet ring 5. For this purpose the tube 7 is fitted with a cook 14 for controlling the supply to the jet ring 5, and a branch pipe, (not shown in the drawing), may be coupled at 15 to the supply pipe 7 and lead to the container 1 in any desired manner, although the following construction and arrangement are preferred.

The container 1 is provided with a filling cover 16 which is closed by means of pressure exerted by a hollow lever 17. One end of this lever may be forked at a solid part and engages a nut 18 which is screwed to a projection 19 of the container 1. The lever 17 extends across the cover 16 and on the other side thereof is connected in any suitable manner to the container 1, preferably by means of a spring 20 extending from the neck of the stufling box 13. The lever 17 is formed with an enlargement 21 through which an outlet from'the hollow interior of the lever is provided and the cover 16 is formed with a passage 22 having ports at its inner and outer surfaces, the parts being so disposed that the outlet of the lever 17 in the enlargement 21registers with the outer port of the passage 22 so that the interior of the lever to the container,,and to the is connected with the interior of the container. The lever is also fitted with an inlet opening at 24 to which the branch pipe leading from the supply pipe 7 at 15 is connected. In this manner compressed air or gas is conducted from the supply pipe 7 through the branch pipe, hollow lever 17-, and the passage 22 of the cover 16 to the container 1. The branch pipe may be provided with a regulating valve and in the drawing a further valve 25 in the, main supply pipe is-also shown.

The outlet port of the passage 22 through the cover 16 is preferably situated between two projecting lugs 26 of the cover 16, the lever 17 being situated between the lugs 26. These lugs may be perforated above the lever as shown so that the latter may be retained by a pin engaging the holes.

A handle 28 may be provided on the lever 17 for holding the apparatus.

The inner port of the cover passage 22 is preferably protected from being obstructed by spattering material melted inside the container by a plate or shield 27 fitted to the cover.

What I claim is 1. In apparatus for spraying molten subpart of the nozzle, means for clamping thejet ring and nozzle together and the nozzle against the faced edge of the container, and means for supplying compressed air or gas jet ring, substantially as specified.

2. In apparatus for spraying molten substances, the combination of a container, a nozzle and a jet ring surrounding the nozzle, means for clamping said nozzle and jet ring against a faced edge around an opening below the normal liquid level in the container,.

a needle valve disposed across the container having a seat 1n the nozzle bore with the common axis of the valve and nozzle incllned 1n relation to that level and means for adjusting the valve outside the container above the normal liquid level, substantially as specified.

3. In apparatus for spraying molten substances, the combination of a container, a

nozzle opening therein, means for fitting a' burner to the container, and a deflector shield forming a flue for the burner flame around the nozzle and adjacent parts of the container, substantially as specified.

4. In apparatus for spraying molten substances, the combination of a container, a separate nozzle formed with a faced surface around one end of its bore-fitting a corresponding faced edge around an opening in fit the container, a perforated tubular jet ring at the other end of the nozzle bore fitting close against a shoulder around a reduced partof the nozzle, a deflector shield clamping the jet ring and nozzle to the container and forming a flnc around the nozzle and adjacent parts of the container, and means for supplying compressed air or gas to the container and to the jet ring,'substantially as specified.

5. In apparatus for spraying molten substances, the combination of a container, a separate nozzle formed with a faced surface around one end of its bore fitting a .corresponding faced edge around an opening in the container, a perforated tubular jet ring at the other end of the nozzle bore fitting close against a shoulder around a reduced part of the nozzle, a deflector shield having an opening surrounding the perforations of the jet ring andengaging that ring, screwed rods extending from the shield fitted with nuts engaging lugs on the container and means for supplying compressed air or gas to the container and to the jet ring, substantially as specified.

6. In apparatus for spraying molten substances, the combination of a container, a separate nozzle formed with a faced surface around one end of its bore fitting a corresponding faced edge around an opening below the normal liquid level in'the container, a perforated tubular jet ring at the other end of the nozzle bore fitting close against a shoulder around a reduced part of the nozzle, means for fitting a burner to the container, a flue for the burner flame formed by a deflector shield having an opening surrounding the perforations of the jet ring and engaging that ring, screwed rods extending from the shield fitted with nuts engaging lugs on the container, a needle valve disposed across the container having a seat in the nozzle bore with the common axis of the valve and nozzle inclined in relation to the normal liquid level, means for adjusting the valve outside the container above that level, and means for supplying compressed air or gas to the container and to the jet ring, substantially as specified.

7. In apparatus for spraying molten substances, the combination with a container having an aperture therein, of a nozzle for said container, and means in engagement with said container at a point remote from said aperture for clamping the nozzle against the container adjacent the-aperture whereby said nozzle may be readily removed and replaced.

8. In apparatus for spraying molten substances, the combination with a container having an aperture therein, of a nozzle for said container, a jet ring surrounding said nozzle and means in engagement with said container at a point remote from said aperture for clamping the nozzle and jet ring in operative position adjacent said aperture.

9. In apparatus for spraying molten substances, the combination with a container having a faced aperture therein, of a nozzle having a correspondingly faced surface. for seating in said aperture, a jet ring surrounding said nozzle, and clamping means for engaging said jet ring to maintain said jet ring and nozzle in operative position with respect to said aperture.

10. In apparatus for spraying molten substances, the combination with a container having an aperture therein and being adapted to support a burner, of a nozzle for said container, and means for retaining said nozzle in operative position adjacent said aperture, said means having a portion thereof constructed and arranged to form a flue for the burner flame.

In testimony whereof I hereunto aflix my signature.

IIENDRIK JOHAN VERSTEEG. 

